Glenn Selk, Oklahoma State University Emeritus Extension Animal Scientist — Despite our best efforts at bull selection and heifer development, cows or heifers occasionally need assistance at calving time. Every baby calf has a certain degree of respiratory acidosis. Acidosis is the result of the deprivation of oxygen and the accumulation of carbon dioxide that results from the passage of the calf through the birth canal. The excess of carbon dioxide results in a build-up of lactic acid (therefore the acidosis.) In order to correct the lack of oxygen and the excess of carbon dioxide and its by-products, the healthy calf will pant vigorously shortly after birth. Some calves, however, may be sluggish and slow to begin this corrective process.